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cf7LocalStorage()

Utilize localstorage on Contact Form 7 text inputs to make it easier for users to continue filling out previously abandoned forms on future visits.

JavaScript February 7, 2021

Usage

This function runs automatically, so it is not called manually. Is this incorrect?

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    Source File

    Located in /assets/js/modules/forms.js on line 514.

    No Hooks

    This function does not have any filters or actions available. Request one?
    JavaScript
    nebula.cf7LocalStorage = function(){
        if ( !jQuery('.wpcf7-form').length ){
            return false;
        }
    
        jQuery('.wpcf7-textarea, .wpcf7-text').each(function(){
            let thisLocalStorageVal = localStorage.getItem('cf7_' + jQuery(this).attr('name'));
    
            //Fill textareas with localstorage data on load
            if ( !jQuery(this).hasClass('do-not-store') && !jQuery(this).hasClass('.wpcf7-captchar') && thisLocalStorageVal && thisLocalStorageVal !== 'undefined' && thisLocalStorageVal !== '' ){
                if ( jQuery(this).val() === '' ){ //Don't overwrite a field that already has text in it!
                    jQuery(this).val(thisLocalStorageVal).trigger('keyup');
                }
                jQuery(this).blur();
            } else {
                localStorage.removeItem('cf7_' + jQuery(this).attr('name')); //Remove localstorage if it is undefined or inelligible
            }
    
            //Update localstorage data
            jQuery(this).on('keyup blur', function(){
                if ( !jQuery(this).hasClass('do-not-store') && !jQuery(this).hasClass('.wpcf7-captchar') ){
                    localStorage.setItem('cf7_' + jQuery(this).attr('name'), jQuery(this).val());
                }
            });
        });
    
        //Update matching form fields on other windows/tabs
        nebula.dom.window.on('storage', function(e){
            jQuery('.wpcf7-textarea, .wpcf7-text').each(function(){
                if ( !jQuery(this).hasClass('do-not-store') && !jQuery(this).hasClass('.wpcf7-captchar') ){
                    jQuery(this).val(localStorage.getItem('cf7_' + jQuery(this).attr('name'))).trigger('keyup');
                }
            });
        });
    
        //Clear localstorage when AJAX submit fails (but submit still succeeds)
        if ( window.location.hash.includes('wpcf7') ){
            if ( jQuery(escape(window.location.hash) + ' .wpcf7-mail-sent-ok').length ){
                jQuery(escape(window.location.hash) + ' .wpcf7-textarea, ' + escape(window.location.hash) + ' .wpcf7-text').each(function(){
                    localStorage.removeItem('cf7_' + jQuery(this).attr('name'));
                    jQuery(this).val('').trigger('keyup');
                });
            }
        }
    };
    

    Override

    To override or disable this JavaScript function, simply redeclare it with the exact same function name. Remember: Some functionality is conditionally loaded via dynamic imports, so if your function is not overriding properly, try listening for a DOM event (described below).

    JavaScript

    For non-module import functions:

    nebula.cf7LocalStorage = function(){
        //Write your own code here, leave it blank, or return false.
    }


    For dynamically imported module function overrides:

    jQuery(window).on('load', function(){
        nebula.cf7LocalStorage = function(){
            //Write your own code here, leave it blank, or return false.
        }
    });


    Custom Nebula DOM events do also exist, so you could also try the following if the Window Load listener does not work:

    jQuery(document).on('nebula_module_loaded', function(module){
        //Note that the module variable is also available to know which module specifically was imported
        if ( typeof nebula.cf7LocalStorage === 'function' ){
            nebula.cf7LocalStorage = function(){
                //Write your own code here, leave it blank, or return false.
            }
    	}
    });